The FDA903S is the new ST single channel class-D audio amplifier offering speaker control and system robustness/ reliability.
STMicroelectronics FDA903S Class-D Automotive Audio Amplifier is specifically designed for automotive applications, especially e-Call and telematics. The FDA903S incorporates a 24-bit, 100dB DAC conversion and PWM class-D output stage with feedback before the LC filter. This configuration can create the design of a compact and inexpensive application.
The STM FDA903S Class-D Automotive Audio Amplifier supports I2S and TDM digital bit streams up to 16CH with several sampling frequencies from 8kHz to 96kHz. FDA903S embeds a complete diagnostic in play, including real-time load-current monitoring and a digital admittance meter, to deliver the most demanding OEM requirements regarding speaker control and system robustness/ reliability. The FDA903S supports start stop cranking down to 3.3V.
Features
- AEC-Q100 qualified
- Integrated 100 dB D/A conversion
- I2S and TDM digital input (up to 16CH TDM)
- Selectable input sample rate frequency (8/16/32/44.1/48/96)
- 3.3V to 18V Wide supply operating range
- PWM frequency switching selectable by I2C352.8kHz, 384kHz, 411.6kHz, 448kHz
- 2x I2C addresses
- MOSFET power outputs
-Typ 10W 4Ω @ 14.4V, 1kHz THD = 1%
-Typ 5W 8Ω @ 14.4V, 1kHz THD = 1%
- Noise: 80μV A-weighted: 20kHz
- 8Ω, 4Ω driving capability
- Input amplitude limiter (configurable through I2C)
- Load current monitor
- 2 CD/Diag pin
- Integrated ESD and short circuit protection
- I2C full configurability and diagnostic
-Startup diagnostic
-Input voltage amplitude limiter function (configurable through I2C)
-4x Thermal warning
-DC diagnostic
-OCP protection scheme configurable
-Mute time configuration
-DAM (Digital-Admittance-Meter)
- Capability to run a complete diagnostic in play
-Configurable clipping detector
-One of the thermal warnings
-Over current protection
-Open load detection
-High voltage mute
- QFN32 with wettable flanks
